ELECTRIC MOTOR DRIVE CONTROL DEVICE AND DRIVE CONTROL METHOD

摘要

The present invention relates to a drive control device and a drive control method for driving an electric motor having a plurality of winding sets each corresponding to a plurality of phases. According to the drive control device and drive control method of the present invention, when an activation abnormality has occurred in which the potential of a winding becomes the power supply potential or the ground potential, at least one of high potential side switching elements and low potential side switching elements in an activation path where the activation abnormality has occurred is controlled to be in an on-state so that each inter-phase impedance becomes small. Braking torque is then detected that occurs in the activation path where the activation abnormality has occurred, and the output of an activation path where no activation abnormality occurs is controlled based on the detected braking torque.